Mineralogic and Petrologic Study of Lunar Anorthosite Slide 15415,18

Details Mineralogic and Petrologic Study of Lunar Anorthosite Slide 15415,18 Mineralogic and Petrologic Study of Lunar Anorthosite Slide 15415,18

Jan 1972

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972sci...175..430h&link_type=abstract

Science, Volume 175, Issue 4020, pp. 430-432

Computer Science

3

Scientific paper

The anorthosite slide 15415,18 contains > 98 percent subhedral plagioclase (97 mole percent anorthite), two pyroxenes: diopsidic augite (46 percent wollastonite, 39 percent enstatite, 16 percent ferrosilite) with subsidiary (100) lamellae and grains of hypersthene (2.5 percent wollastonite, 58 percent enstatite, 39.5 percent ferrosilite), and traces of ilmenite. The pyroxene occurs interstitial to, and as small grains enclosed within, plagioclase. The textures and compositions of the phases appear compatible with an origin by concentration and adcumulus growth of plagioclase from a gabbroic anorthosite (or hyperaluminous) magma in a "plutonic" environment.

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